Internal-combustion engine.



S. C. PAGET.

INTERNAL COMBUSTION ENGINE. APPUCATION FILED SEPT. 5. 1914.

1 72,305. Patented July 9, 1918.

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S. C. PAGET.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED SEPT. 5, I914.

1 72 ,305, Patented July 9, 1918.

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8. C. PAGET.

INTERN. COMBUSTION ENGINE. APPLICATION FILED SEPT. 5. 1914.

1 ,272,3D5. Patented July 9, 1918.

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STEWART CHARLES PAGE'I, 0F WALLINGFORD, ENGLAND.

INTERNALCOMBUSTION ENGINE.

Specification of Letters Patent.

Patented July 9, 1918.

Application filed September 5, 1914. Serial No. 860,443.

To all whom it may concern:

Be it known that I, STEWART CHARLES PAcn'r, a subject of the King of Great Britain, and a resident of Ewelme, VVallingford, Berkshire, England, have invented new and useful Improvements in Internal-Combustion Engines, of which the following is the specification. I

This invention relates to internal combustion engines. v

The object of my invention is to provide such a construction and arrangement ofengine as will better maintain the working pressure on the piston during the working stroke, and to better control the production of such pressure in accordance with the work required of the engine.

According to my invention I provide means for exploding the combustible gases in a separate or secondary cylinder adjacent theworking cylinder, to which secondary cylinder, the mixture is compressed and delivered by a pump or the like, and in which second cylinder the charge exploded, the gases being delivered to the working cylinder through a controlling valve.

The invention also comprehends means whereby the products of combustion ignited in the secondary or firing cylinder are placed in communication with the Working cylinder by suitable controlled valves actuated through the medium of an auxiliary motor,

whereby the charges are transferred to the power cylinder to'efi'ect the operation of the engine.

' In. order that the products of combustion may be delivered to the working cylinder, a piston is arranged within the firing cylinder and adapted to be forced downwardly after each explosion by means of the auxiliary power motor actuating a cam shaft engaging piston rods carried by each of the pistons so that after an explosion has taken place in the firing chamber, the piston therein is forced downwardly through the medium of the cam shaft, thus delivering the exploded gases contained in the firing chamber rapidly into the} working cylinder, it being apparent that a spring or other suitable means may be employed for returning'the piston to its normal position. I i

The valves for controlling the admission of the fuel charge to the firing cylinder, as

well asthe valve for controlling the communication between the firing cylinder and stroke of the piston contained therein, to

accord with the demand made upon the engine. I

Thereturn stroke of the piston drives the products of combustion out of the exhaust port in the usual manner.

And in order that my invention may be more completely understood, reference should be made to the appended sheets of drawings which illustrate one example of my invention.

. Figure 1 shows in longitudinal section two cylinders of an internal combustion engine constructed and arranged according to my invention.

Fig. 2 is a section on the line X X of Fig. 1.

Fig. 3 is a transverse section on the line Z Z of Fig. 1.

A, A, are the working cylinders within which the pistons B, B, reciprocate, said pistons having connecting rods C, C, connected to the crank shaft D in the usual manner.

: Mounted within the cylinder head A of the cylinder A, is a secondary or igniting cylinder 'E adapted to reciprocate, within which is a plunger or piston E provided with a tappet or piston rod E having at its upper end a roller E The roller E is adapted to engage a cam K formed upon the shaft L in such manner that the plunger or-piston IE will be depressed in order to scavenge the cylinder E of products of combustion. The piston E is returned to its normal position by a spring E. I The cylinder E is adapted to be put int-o communication with the working cylinderA at the required time by the piston valve F.

Formed, parallel to the cylinder E is the pump. cylinder G provided with the plunger or piston G adapted to be reciprocatedby the connecting rod G from the crank pin L formed in the overhead shaft L.

A non-return valve H is placed at the lower end of the cylinder G and below which valve being operated from the cam shaft S in the usual manner.

The cylinder G is also provided with a delivery valve I of the piston typ'eadapted to communicate with the said secondary cyl iIi'der E at the" required time.

The two piston val-yes F and I are operated from eccentrics F I (see Fig. 2) mounted upon the lay shaft M, which shaft is connected to the overhead shaft L, by means'of a chain "and chainwheels M L secured to the shaft .M and, L respectively, and runs at the same speed thereto.

The lay shaft M- for operating the valves and the overhead shaft L are driven by suitable means, from an independent prime mover (not shown),

The cycle of operations is as follows :On the opening ofthe inlet valve S, which takes place just prior to the working piston reaching its in dead center, mixture is drawn from the carbureter (not shown) by the piston Glthrough the passage H andrthenonreturn valve H into thev cylinder G Where it is compressed by the return of the piston G through the valve I into the secondary cylinder E. Immediately before the closing of the delivery valve I, the valve F opens and the mixture being ignited by means of the spark plug E expands into the Working cylinder A, forcing the piston B downward.

' The cam K now depresses the tappet E and the piston E scavenges the ignited charge from the cylinder E. When the valve F closes, the cycle in the cylinders E G, recommences and is repeated a number of times during the down stroke of the piston, a fresh expanding charge being admitted tothe combustion space of the working cylinder on each cycle.

"Just prior to the piston B reaching the end; of its stroke, the exhaust valve I? opens and the "products of combustion are scavenged out of the exhaust port P by-the returnofthe piston.' l I It will be obyiousthat although one igniting cylinder for each working cylinder is described a multiplicity of such cylinders 'may be employed if desired.

The small cylinder E in'which the explosions take place and in which the gases are generated under pressure; and stored for a short interval of time, 'beingf driven by a separate and independent prime mover may be driven at the desired speed in order to provide the necessary 'powerin the working cylinder For example, in oneworking stroke" of the working piston B,'there may be thre'e' or four deliveries of combustion gases" from the auxiliary cylinder E to one working stroke of the working piston, so

an increased power maybe given the working piston when it is desired to run this piston, that is to say, one, or more than one stroke may be an idle stroke controlled in accord with the speed of the auxiliary prime mover. In this manner the working stroke might be cut out for one, two, or three revolutions When o newer. was requ r rom the engine. A

It will be understood that any prime mover may beused to operate the auxiliary pistons and valves, and such prime mover may be an electric motor operated by or from n gy pr v e by e p w r. n i e as shown diagrammatically in Fig. Zwherein the numeral 1 designates an electric n10- tor of any conventional type driving a suit.- able belt 2 operating shaft M and Controlling the sliding valves F. q p

I'Vhat I do claim as my invention and desire to secure by Letters Patent is 7 1. An internal combustion engine, thecornbination with a cylinder having a 'piston therein, a secondary cylinder in communi cation with the cylinder, means for controlling the communication, means for introducing, and exploding a series of fuel charges in the secondary cylinder, during. a downward stroke of the power piston, and a scavenging piston arranged within the secondary cylinder for forcing the gases undergoing combustion from the secondary cylinder into the power cylinder after each explosion. 5 f

2. In an internal combustion engine, the combination with a plurality of cylinders having pistons therein, of, a secondary cylinder for each cylinder in communication therewith, a valve for controlling the communication means for introductin'g fuel into the secondary cylinder and'explod-ing the same therein, and a reciprocating scavenging piston arranged in the secondary cylinder in the secondary'cyli'nder and a'ctuatedyby said' drive shaft for; delivering the gases undergoing combusti'onin the secondary cylinder to the power cylinder. f

4:. In an internal combustion engine, the combination with "a plurality of cylinders having pistons therein, a" secondary cylinder for each cylinder and in communication therewith, a valve for controlling the commucation therewith, and a nication means for introducing fuel into the secondary cylinder and exploding the same therein, an auxiliary motor, a shaft actuated by said motor, and a scavenging piston arranged in each secondary cylinder adapted to be reciprocated by the power shaft for forcing the gases undergoing combustion after each explosion from the secondary cylinder to the power cylinder. I

5. In an internal combustion engine, the combination with a plurality of cylinders having pistons therein, of a secondary cylinder overlying each cylinder in communifuel feed for each secondary cylinder, a sliding piston valve controlling said fuel feed, a sliding piston valve controlling the communication between the secondary cylinder and power cylinder, an auxiliary motor, and means connecting said auxiliary motor with said sliding valves whereby a series of charges may be delivered to the secondary cylinder and exploded therein during a single downward stroke of the piston in the power cylinder to accord with the demand upon the engine.

6. In an internal combustion engine, the combination with a plurality of cylinders having pistons therein, of a secondary cylinder overlying each cylinder in communication therewith, and a fuel feed for each secondary cylinder, a sliding piston valve controlling the communication between the secondary cylinder and power cylinder, an auxiliary motor, and means connecting said auxiliary motor with said sliding valve whereby a series of charges may be delivered to the secondary cylinder and exploded Copies of this patent may be obtained for five cents each, by addressing the therein during a single downward stroke of the piston in the power cylinder to accord with the demand upon the engine, and a scavenging piston arranged in each. secondary cylinder and actuated by the auxiliary motor for forcing the gases undergoing combustion contained within the firing cylinder into the power cylinder.

7 In an internal combustion engine, the combination with a power cylinder and a piston, of a secondary cylinder and piston driven and controlled by an independent motor, said secondary cylinder being adapted to receive the fuel mixture and explode the same within the cylinder, the charges of gases undergoing combustion being transferred to the power cylinder as frequently as may be required in accordance with the demand upon the engine.

8. In an internal combustion engine, the combination with a power cylinder and a piston, a secondary, cylinder and piston driven and controlled by an independent motor, said secondary cylinder being adaptel to receive the fuel mixture and explode the same within the cylinder, the charges of gases undergoing combustion being transferred to the power cylinder as frequently as may be required in accordance with the demand upon the engine, and means for controlling the transfer of gases while undergoing combustion from the secondary cylinder to the working cylinder.

STEWART CHARLES PAGET.

Witnesses:

I. D. Rooms, 0. J. WORTH.

Commissioner of Iotents.

Washington, D. G. 

